It would appear that someone has set up a fake advert on Yahoo Mail & Yahoo Finance which is sending traffic to my site. My visitor numbers are up over 1,500% today so far, site is slowing down.
I have no idea why they are sending traffic to my site as I assume there is a cost associated with placing the Ad. I have reported this to Yahoo, but unsure how long it will take them to take the advert down.
In the meantime is there any way I can temporarily block all traffic coming from Yahoo?